MESON Chess Problem Database

Problem Display
PID: 229332 (8/8/8/8/8/2p5/2pk1K2/N5Q1 w - - 0 1)

Myhre, Gunnar Frode

Deutsche Schachzeitung, 1973

8/8/8/8/8/2p5/2pk1K2/N5Q1

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf1?
      • threat
        • 2.Sb3#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1B
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#
      • 1...c1S!
    • 1.Qh1?
      • 1...Kd3
        • 2.Qd5#
      • 1...c1Q
        • 2.Qd5#
      • 1...c1B
        • 2.Qd5#
      • 1...c1R
        • 2.Qd5#
      • 1...c1S!
    • 1.Qg5+?
      • 1...Kd3
        • 2.Qd5#
      • 1...Kd1!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxc2#
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kd1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Qd6#
      • 1...c1S
        • 2.Qc2#
      • 1...c1B
        • 2.Qc2#
        • 2.Qd6#
      • 1...c1R
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • S(A)
      • Vars
        • P(a);SBLOCK::QAR1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • P(a);SBLOCK::QAR(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(B),XP(a)
      • K(b);P-FLIGHT::QAB1(B),XP(a)
      • P(a);SBLOCK::QAR(B)
      • P(a);::QAR1(B)
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